M21.721
BillableUnequal limb length (acquired), right humerus
Unequal limb length (acquired), right humerus
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •arthropathic psoriasisL40.5
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •compartment syndrome (traumatic)A-)T79
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •joints of the spineM40-M54
- •acquired deformities of fingers or toesM20
- •coxa planaM91.2
Related Codes(2)
Also Known As / Clinical Terms(15)
SNOMED CT
- Acquired deformity of upper arm111261006
- Acquired musculoskeletal deformity of upper arm111261006
- Acquired unequal arm length203602007
- Acquired unequal upper limb length203602007
- Deformity of humerus271086008
- Acquired deformity of right upper arm300401000119100
- Unequal upper limb length due to acquired shortening of right humerus323121000119102
Clinical Terms
- Acquired deformity of right upper arm
- Acquired deformity of upper arm
- Acquired musculoskeletal deformity of upper arm
- Deformity of humerus
- Acquired unequal upper limb length
- Acquired unequal arm length
- Unequal upper limb length due to acquired shortening of right humerus
Frequently Asked Questions
What is the ICD-10 code for unequal limb length (acquired), right humerus?
The ICD-10-CM code for unequal limb length (acquired), right humerus is M21.721. The full clinical description is "Unequal limb length (acquired), right humerus". M21.721 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M21.721 mean?
ICD-10-CM code M21.721 represents “Unequal limb length (acquired), right humerus”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a billable/specific code that can be used on a claim.
Is M21.721 a billable code?
Yes, M21.721 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M21.721 in?
M21.721 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M21.721?
M21.721 has Excludes1 notes indicating codes that cannot be used together with it, including: acquired absence of limb (Z89.-); congenital absence of limbs (Q71-Q73); congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74).
What SNOMED CT codes does M21.721 map to?
M21.721 maps to 5 SNOMED CT concepts: 300401000119100, 111261006, 203602007, 271086008, 323121000119102. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M21.721?
M21.721 is linked to 1 UMLS Concept Unique Identifier: C2894523. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M21.721 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like unequal limb length (acquired), right humerus affect a person's functioning: body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of M21.721?
There is no direct ICD-11 mapping available for M21.721 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.